J2SE Version (please include all output from java -version flag):
  java version "1.6.0-ea"
  Java(TM) 2 Runtime Environment, Standard Edition (build 1.6.0-ea-b46)
  Java HotSpot(TM) Client VM (build 1.6.0-ea-b46, mixed mode, sharing)
 
Does this problem occur on J2SE 1.4.x or 5.0.x ? Yes / No (pick one)
  No
 
Operating System Configuration Information (be specific):
  Windows 2000 (German) with latest SP and security pack
 
Bug Description:
  The jar files will not be found with JNLP files. If replace the host name
  with a IP address then it work. In the Details you can see:

Exception:
========
com.sun.deploy.net.FailedDownloadException: Ressource konnte nicht geladen
werden: http://dell28/HelpDesk/Scripts/HelpDesk.jnlp
<http://dell28/HelpDesk/Scripts/HelpDesk.jnlp>
 at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown Source)
 at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown Source)
 at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source)
 at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source)
 at com.sun.deploy.net.DownloadEngine.getResource(Unknown Source)
 at com.sun.deploy.net.DownloadEngine.getResource(Unknown Source)
 at com.sun.javaws.LaunchDownload.getUpdatedLaunchDesc(Unknown Source)
 at com.sun.javaws.Launcher.downloadJNLPFile(Unknown Source)
 at com.sun.javaws.Launcher.prepareLaunchFile(Unknown Source)
 at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
 at com.sun.javaws.Launcher.launch(Unknown Source)
 at com.sun.javaws.Main.launchApp(Unknown Source)
 at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
 at com.sun.javaws.Main$1.run(Unknown Source)
 at java.lang.Thread.run(Unknown Source)
 

Caused Exception:
===============
java.net.UnknownHostException: dell28
 at java.net.PlainSocketImpl.connect(Unknown Source)
 at java.net.Socket.connect(Unknown Source)
 at java.net.Socket.connect(Unknown Source)
 at sun.net.NetworkClient.doConnect(Unknown Source)
 at sun.net.www.http.HttpClient.openServer(Unknown Source)
 at sun.net.www.http.HttpClient.openServer(Unknown Source)
 at sun.net.www.http.HttpClient.&lt;init&gt;(Unknown Source)
 at sun.net.www.http.HttpClient.New(Unknown Source)
 at sun.net.www.http.HttpClient.New(Unknown Source)
 at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown
Source)
 at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
 at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
 at com.sun.deploy.net.BasicHttpRequest.doRequest(Unknown Source)
 at com.sun.deploy.net.BasicHttpRequest.doRequest(Unknown Source)
 at com.sun.deploy.net.BasicHttpRequest.doGetRequest(Unknown Source)
 at com.sun.deploy.net.DownloadEngine.actionDownload(Unknown Source)
 at com.sun.deploy.net.DownloadEngine.getCacheEntry(Unknown Source)
 at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source)
 at com.sun.deploy.net.DownloadEngine.getResourceCacheEntry(Unknown Source)
 at com.sun.deploy.net.DownloadEngine.getResource(Unknown Source)
 at com.sun.deploy.net.DownloadEngine.getResource(Unknown Source)
 at com.sun.javaws.LaunchDownload.getUpdatedLaunchDesc(Unknown Source)
 at com.sun.javaws.Launcher.downloadJNLPFile(Unknown Source)
 at com.sun.javaws.Launcher.prepareLaunchFile(Unknown Source)
 at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
 at com.sun.javaws.Launcher.launch(Unknown Source)
 at com.sun.javaws.Main.launchApp(Unknown Source)
 at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
 at com.sun.javaws.Main$1.run(Unknown Source)
 at java.lang.Thread.run(Unknown Source)
 
 
 

Steps to Reproduce (be specific):
 Simple start the attached jnlp file.